Is role="slider", aria-valuemax and aria-valuemin needed?

[kirsty-hames]

Subject of the issue

Mozilla ARIA slider role best practice states HTML's <input type="range"> implicitly has the role of slider. Do not use aria-valuemax or aria-valuemin attributes on <input type="range"> elements; use min and max instead. Otherwise, any global aria-* attributes and any other aria-* attributes applicable to the slider role.

Slider already uses min and max properties but maybe we should remove role="slider", aria-valuemax and aria-valuemin as suggested?

[kirsty-hames]

I can confirm removing role="slider", aria-valuemax, aria-valuemin and aria-valuenow has no impact and works as expected for voiceOver. Testing on both Mac and iPhone Safari. I'd need someone to confirm other screen readers/environments.

[oliverfoster]

I think I only added them because we were having issues with rangeslider and I wanted to make it explicit as to how the slider becomes accessible.

578ad47

They are implied properties of the <input type="range"> element, so it should be fine to remove.